| 134 | Gran Proyección Lumínica Sobre El Universo Se Presentará En Parque Bicentenario |
| 133 | Giant Magellan Telescope Awards IDOM Final Design of its Telescope Enclosure |
| 132 | El Telescopio Magallanes Gigante otorga a IDOM el diseño final del edificio del telescopio |
| 131 | The Year in Photos 2021 |
| 130 | Rockford Company to Help Giant Telescope Reach for the Stars, Peek at the Universe |
| 129 | Ingersoll Breaks Ground on Facility to Build Giant Magellan Telescope Mount |
| 128 | Stateline Manufacturer Breaks Ground on Giant Telescope Project |
| 127 | Spinning Glass To See The Stars |
| 126 | Giant Magellan Telescope Project Casts Sixth Mirror |
| 125 | The Year in Photos 2021 |
| 124 | US Extremely Large Telescope Program Ranked As Top Astro2020 Initiative |
| 123 | Pathways to Discovery in Astronomy and Astrophysics for the 2020s |
| 122 | Spinning Glass To See The Stars |
| 121 | Giant Magellan Telescope Project Casts Sixth Mirror |
| 120 | How We’ll Find Life in the Universe |
| 119 | New Stars Found in the Milky Way Were Born Outside of It |
| 118 | A Significant Milestone |
| 117 | Weizmann Institute of Science Joins Giant Magellan Telescope, a Top Priority for Science Worldwide |
| 116 | Engineering Marvel: Sixth Mirror Cast for Giant Magellan Telescope |
| 115 | Giant Magellan Telescope Earns Top Marks in Earthquake Safety, a First in Observatory Design |
| 114 | 2020 in Photos |
| 113 | Giant Magellan Telescope Signs Contract for Telescope Structure |
| 112 | Major NSF Grant Accelerates Development of the Giant Magellan Telescope |
| 111 | In Memoriam – João E. Steiner |
| 110 | Carnegie Virtual Conversation With Rebecca Bernstein |
| 109 | Joint Statement From the US-ELT Program |
| 108 | Weizmann Institute of Science Joins Giant Magellan Telescope, a Top Priority for Science Worldwide |
| 107 | El Instituto de Ciencias Weizmann se une al Telescopio Magallanes Gigante, una prioridad científica a nivel mundial |
| 106 | Engineering Marvel: Sixth Mirror Cast for Giant Magellan Telescope |
| 105 | Diciembre 2020 – Español |
| 104 | 2020 in Photos |
| 103 | December 2020 |
| 102 | Giant Magellan Telescope earns top marks in earthquake safety, a first in observatory design |
| 101 | Major NSF grant accelerates development for one of the world’s most powerful telescopes |
| 100 | In Memoriam – João E. Steiner |
| 99 | A Significant Milestone |
| 98 | Carnegie Virtual Conversation with Rebecca Bernstein |
| 97 | Declaración conjunta sobre la presentación de las propuestas de “Planificación y diseño de un programa de telescopios extremadamente grandes de EE.UU.” a la Fundación Nacional de Ciencias |
| 96 | Joint Statement from the US ELT Program |
| 95 | July 2020 |
| 94 | SPIE: On Shaky Ground |
| 93 | SPIE: Casting Giants |
| 92 | Meet GMTO: Bob Turner |
| 91 | Hubble Space Telescope’s 30th Anniversary |
| 90 | Meet GMTO: Bob Goodrich |
| 89 | Astronomy at Home |
| 88 | Enero 2020 – Español |
| 87 | Top Astronomy Stories of 2019 |
| 86 | December 2019 |
| 85 | Giant Magellan Telescope signs contract for telescope structure |
| 84 | Telescopio Magallanes Gigante firma el contrato para la estructura del telescopio |
| 83 | Multimedia: Giant Magellan Telescope signs contract for telescope structure |
| 82 | Multimedia: Telescopio Magallanes Gigante firma contrato para la estructura del telescopio |
| 81 | Patrick McCarthy, Giant Magellan Telescope Vice President, appointed director of NSF’s National Optical-Infrared Astronomy Research Laboratory |
| 80 | Agosto 2019 – Español |
| 79 | July 2019 |
| 78 | Remembering Apollo 11: thoughts from GMTO Project Manager James Fanson |
| 77 | Total Solar Eclipse: Chile 2019 |
| 76 | Mayo 2019 |
| 75 | Chile’s most advanced astronomical mobile lab launched in front of Presidential Palace |
| 74 | Con una fiesta ciudadana se lanzó el laboratorio itinerante de astronomía más avanzado de Chile |
| 73 | Excavation of GMT pier and enclosure foundations complete |
| 72 | March 2019 |
| 71 | 2019 SPIE Awards in Optical Engineering |
| 70 | Enero 2019 |
| 69 | December 2018 |
| 68 | Dr. Miguel Roth receives Order of Bernardo O’Higgins from Chilean Foreign Affairs Ministry |
| 67 | Dr. Miguel Roth recibe la Orden Bernardo O’Higgins del Ministerio de Relaciones Exteriores de Chile |
| 66 | GMTO at 233rd AAS meeting |
| 65 | Computational Fluid Dynamics tool developed at GMTO |
| 64 | Septiembre 2018 – Español |
| 63 | National Academies report supports NSF investment in GMT and TMT |
| 62 | August 2018 |
| 61 | Comienzan las excavaciones para las fundaciones del Telescopio Magallanes Gigante |
| 60 | Excavation begins on Giant Magellan Telescope site in Chile |
| 59 | GMT’s 2018 Science Book Released |
| 58 | GMTO exhibits at the City of Astronomy’s AstroFest 2018 |
| 57 | Invitation to Participate in Development of Exemplar Key Science Programs for Astro 2020 |
| 56 | GMTO to work with NOAO and TMT to develop science vision for the Decadal Survey |
| 55 | Abril 2018 – Español |
| 54 | April 2018 |
| 53 | La Organización Telescopio Magallanes Gigante nombra a WSP como Administrador de la Construcción |
| 52 | Giant Magellan Telescope Organization names WSP as Construction Manager |
| 51 | Diciembre 2017 – Español |
| 50 | GMT Open House at 231st AAS meeting |
| 49 | Telescope Mount Stage 1 contracts awarded |
| 48 | December 2017 |
| 47 | Universidad Estatal de Arizona se une a la Organización Telescopio Magallanes Gigante |
| 46 | Arizona State University Joins the Giant Magellan Telescope Organization |
| 45 | Science Philanthropy |
| 44 | In Memoriam: Jeffrey McClintock |
| 43 | Giant Magellan Telescope Organization Casts Fifth Mirror |
| 42 | Organización Telescopio Magallanes Gigante funde su quinto espejo |
| 41 | Octubre 2017 – Español |
| 40 | September 2017 |
| 39 | GMT’s First Giant Mirror Segment Starts Journey South |
| 38 | The Great American Eclipse |
| 37 | Junio 2017 – Español |
| 36 | What it Takes to Build the World’s Largest Telescope |
| 35 | June 2017 |
| 34 | Registration open for the fifth annual GMT Community Science Meeting |
| 33 | Abril 2017 – Español |
| 32 | March 2017 |
| 31 | Robert N. Shelton’s first month at GMTO |
| 30 | Request for Proposals for Telescope Mount Released |
| 29 | Robert N. Shelton Selected as President of Giant Magellan Telescope Organization |
| 28 | A Year in Review: 2016 Astronomy Highlights |
| 27 | The City of Pasadena Celebrates First Astronomy Week |
| 26 | Noviembre 2016 – Español |
| 25 | Walter E. Massey and Taft Armandroff Selected to Lead Giant Magellan Telescope Board of Directors |
| 24 | November 2016 |
| 23 | Astronomy Week in Pasadena – October 16-22, 2016 |
| 22 | Agosto 2016 – Español |
| 21 | August 2016 |
| 20 | RFP Announcement of Opportunity |
| 19 | Registration Open for the fourth Annual GMT Community Science Meeting |
| 18 | Marzo de 2016 – Español |
| 17 | March 2016 |
| 16 | Dr. Wendy Freedman honored |
| 15 | December 2015 |
| 14 | James Fanson appointed as GMT Project Manager |
| 13 | Images from Groundbreaking Ceremony |
| 12 | Global coverage of Groundbreaking Ceremony |
| 11 | The Giant Magellan Telescope Organization Breaks Ground in Chile |
| 10 | Richard F. Caris Mirror Lab Casts Fourth GMT Segment |
| 9 | Groundbreaking Ceremony to take place November 11, 2015 |
| 8 | Register for the Third Annual GMT Community Science Meeting |
| 7 | Dr. Edward Moses is Stepping Down as President of Giant Magellan Telescope Organization; Dr. Patrick McCarthy Named Interim President |
| 6 | Professor Wendy Freedman stepping down after 12 years as GMTO Board Chair |
| 5 | GMT receives wide coverage for construction announcement |
| 4 | Giant Magellan Telescope’s International Partners Approve Start of Construction Phase |
| 3 | Celebrating the 25th Anniversary of the Launch of the Hubble Space Telescope |
| 2 | Registration opens for the 3rd Annual GMT Community Science Meeting |
| 1 | Mount Stromlo astronomer Professor Peter McGregor loses battle with cancer |
